我要评论程序员的你是不是也想送个特别的礼物。今天给大家分享一个html+css+jquery实现的情侣浪漫爱心表白js特效，视觉效果还是相当不错！得此表白神器，程序猿也可以很浪漫！快去追你的女神吧，把这个告白爱心动画发给你心爱的她！
html代码如下，亲测可用。
<!doctype html>
<html lang="zh">
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>diy跳动爱心</title>
<style>
* {
padding: 0;
margin: 0;
}
body {
height: 600px;
padding: 0;
margin: 0;
background: #000;
display: flex;
justify-content: center;
align-items: center;
}
.container {
width: 500px;
height: 500px;
position: relative;
}
canvas {
z-index: 99;
position: absolute;
width: 500px;
height: 500px;
}
.text_box {
text-align: center;
position: absolute;
font-size: 1.125rem;
top: 36%;
left: 22%;
color: #ff437b;
z-index: 100;
}
input {
font-size: 1.375rem;
color: #ff437b;
text-align: center;
background: none;
}
button {
font-size: 1.375rem;
border: none;
border-radius: 4px;
}
input::input-placeholder {
color: #dc4b61;
}
input::-webkit-input-placeholder {
color: #dc4b61;
}
.heart {
animation: heart 1s infinite ease-in-out;
}
@keyframes heart {
0%,
100% {
transform: rotate(-2deg) scale(1);
}
50% {
transform: rotate(2deg) scale(1.12);
}
}
</style>
</head>
<body>
<div id="jsi-cherry-container" class="container ">
<!-- 爱心 -->
<canvas id="pinkboard" class="container heart"> </canvas>
<!-- 输入你需要的文字 -->
<div class="text_box">
<input type="text" id="text" placeholder="送给你的那个[ta]️">
<button id="btn" onclick="fn()">❤️</button>
</div>
</div>
</body>
<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script>
function fn() {
var a1 = document.queryselector('#text');
var btn = document.queryselector('#btn');
a1.style.border = 'none';
btn.parentnode.removechild(btn);
console.log("点关注不迷路!");
}
</script>
<script>
/*
* settings
*/
var settings = {
particles: {
length: 500, // maximum amount of particles
duration: 2, // particle duration in sec
velocity: 100, // particle velocity in pixels/sec
effect: -0.75, // play with this for a nice effect
size: 30, // particle size in pixels
},
};
(function() {
var b = 0;
var c = ["ms", "moz", "webkit", "o"];
for (var a = 0; a < c.length && !window.requestanimationframe; ++a) {
window.requestanimationframe = window[c[a] + "requestanimationframe"];
window.cancelanimationframe =
window[c[a] + "cancelanimationframe"] ||
window[c[a] + "cancelrequestanimationframe"];
}
if (!window.requestanimationframe) {
window.requestanimationframe = function(h, e) {
var d = new date().gettime();
var f = math.max(0, 16 - (d - b));
var g = window.settimeout(function() {
h(d + f);
}, f);
b = d + f;
return g;
};
}
if (!window.cancelanimationframe) {
window.cancelanimationframe = function(d) {
cleartimeout(d);
};
}
})();
/*
* point class
*/
var point = (function() {
function point(x, y) {
this.x = typeof x !== "undefined" ? x : 0;
this.y = typeof y !== "undefined" ? y : 0;
}
point.prototype.clone = function() {
return new point(this.x, this.y);
};
point.prototype.length = function(length) {
if (typeof length == "undefined")
return math.sqrt(this.x * this.x + this.y * this.y);
this.normalize();
this.x *= length;
this.y *= length;
return this;
};
point.prototype.normalize = function() {
var length = this.length();
this.x /= length;
this.y /= length;
return this;
};
return point;
})();
/*
* particle class
*/
var particle = (function() {
function particle() {
this.position = new point();
this.velocity = new point();
this.acceleration = new point();
this.age = 0;
}
particle.prototype.initialize = function(x, y, dx, dy) {
this.position.x = x;
this.position.y = y;
this.velocity.x = dx;
this.velocity.y = dy;
this.acceleration.x = dx * settings.particles.effect;
this.acceleration.y = dy * settings.particles.effect;
this.age = 0;
};
particle.prototype.update = function(deltatime) {
this.position.x += this.velocity.x * deltatime;
this.position.y += this.velocity.y * deltatime;
this.velocity.x += this.acceleration.x * deltatime;
this.velocity.y += this.acceleration.y * deltatime;
this.age += deltatime;
};
particle.prototype.draw = function(context, image) {
function ease(t) {
return --t * t * t + 1;
}
var size = image.width * ease(this.age / settings.particles.duration);
context.globalalpha = 1 - this.age / settings.particles.duration;
context.drawimage(
image,
this.position.x - size / 2,
this.position.y - size / 2,
size,
size
);
};
return particle;
})();
/*
* particlepool class
*/
var particlepool = (function() {
var particles,
firstactive = 0,
firstfree = 0,
duration = settings.particles.duration;
function particlepool(length) {
// create and populate particle pool
particles = new array(length);
for (var i = 0; i < particles.length; i++)
particles[i] = new particle();
}
particlepool.prototype.add = function(x, y, dx, dy) {
particles[firstfree].initialize(x, y, dx, dy);
// handle circular queue
firstfree++;
if (firstfree == particles.length) firstfree = 0;
if (firstactive == firstfree) firstactive++;
if (firstactive == particles.length) firstactive = 0;
};
particlepool.prototype.update = function(deltatime) {
var i;
// update active particles
if (firstactive < firstfree) {
for (i = firstactive; i < firstfree; i++)
particles[i].update(deltatime);
}
if (firstfree < firstactive) {
for (i = firstactive; i < particles.length; i++)
particles[i].update(deltatime);
for (i = 0; i < firstfree; i++) particles[i].update(deltatime);
}
// remove inactive particles
while (
particles[firstactive].age >= duration &&
firstactive != firstfree
) {
firstactive++;
if (firstactive == particles.length) firstactive = 0;
}
};
particlepool.prototype.draw = function(context, image) {
// draw active particles
if (firstactive < firstfree) {
for (i = firstactive; i < firstfree; i++)
particles[i].draw(context, image);
}
if (firstfree < firstactive) {
for (i = firstactive; i < particles.length; i++)
particles[i].draw(context, image);
for (i = 0; i < firstfree; i++) particles[i].draw(context, image);
}
};
return particlepool;
})();
/*
* putting it all together
*/
(function(canvas) {
var context = canvas.getcontext("2d"),
particles = new particlepool(settings.particles.length),
particlerate =
settings.particles.length / settings.particles.duration, // particles/sec
time;
// get point on heart with -pi <= t <= pi
function pointonheart(t) {
return new point(
160 * math.pow(math.sin(t), 3),
130 * math.cos(t) -
50 * math.cos(2 * t) -
20 * math.cos(3 * t) -
10 * math.cos(4 * t) +
25
);
}
// creating the particle image using a dummy canvas
var image = (function() {
var canvas = document.createelement("canvas"),
context = canvas.getcontext("2d");
canvas.width = settings.particles.size;
canvas.height = settings.particles.size;
// helper function to create the path
function to(t) {
var point = pointonheart(t);
point.x =
settings.particles.size / 2 +
(point.x * settings.particles.size) / 350;
point.y =
settings.particles.size / 2 -
(point.y * settings.particles.size) / 350;
return point;
}
// create the path
context.beginpath();
var t = -math.pi;
var point = to(t);
context.moveto(point.x, point.y);
while (t < math.pi) {
t += 0.01; // baby steps!
point = to(t);
context.lineto(point.x, point.y);
}
context.closepath();
// create the fill
context.fillstyle = "#dc4b61";
context.fill();
// create the image
var image = new image();
image.src = canvas.todataurl();
return image;
})();
// render that thing!
function render() {
// next animation frame
requestanimationframe(render);
// update time
var newtime = new date().gettime() / 1000,
deltatime = newtime - (time || newtime);
time = newtime;
// clear canvas
context.clearrect(0, 0, canvas.width, canvas.height);
// create new particles
var amount = particlerate * deltatime;
for (var i = 0; i < amount; i++) {
var pos = pointonheart(math.pi - 2 * math.pi * math.random());
var dir = pos.clone().length(settings.particles.velocity);
particles.add(
canvas.width / 2 + pos.x,
canvas.height / 2 - pos.y,
dir.x,
-dir.y
);
}
// update and draw particles
particles.update(deltatime);
particles.draw(context, image);
}
// handle (re-)sizing of the canvas
function onresize() {
canvas.width = canvas.clientwidth;
canvas.height = canvas.clientheight;
}
window.onresize = onresize;
// delay rendering bootstrap
settimeout(function() {
onresize();
render();
}, 10);
})(document.getelementbyid("pinkboard"));
</script>
</html>
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